.thre-container {
  padding: 20rpx 40rpx;
  background: transparent;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* H5端适配 */
@media (min-width: 769px) {
  .thre-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 60px;
    background: #f8fafc;
  }
  
  .header {
    padding: 20px 0;
    margin-bottom: 40px;
  }
  
  .title {
    font-size: 32px;
  }
  
  .back-btn {
    font-size: 16px;
    padding: 12px 24px;
    border-radius: 8px;
    width: 200px;
  }
  
  .form-container {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  }
  
  .form-item {
    margin-bottom: 32px;
  }
  
  .label {
    font-size: 16px;
    margin-bottom: 12px;
  }
  
  .input {
    height: 48px;
    border-radius: 8px;
    padding: 0 16px;
    font-size: 16px;
    border: 1px solid #e2e8f0;
  }
  
  .input:focus {
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
  }
  
  .textarea {
    min-height: 120px;
    border-radius: 8px;
    padding: 16px;
    font-size: 16px;
    border: 1px solid #e2e8f0;
  }
  
  .textarea:focus {
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
  }
  
  .submit-btn {
    height: 52px;
    font-size: 18px;
    border-radius: 8px;
    margin-top: 32px;
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
    transition: all 0.2s ease;
  }
  
  .submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(66, 153, 225, 0.4);
  }
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15rpx 0;
  margin-bottom: 30rpx;
  border-bottom: 1rpx solid #e9ecef;
}

.title {
  font-size: 48rpx;
  font-weight: 600;
  color: #212529;
}

.back-btn {
  background: #ffffff;
  border: 1rpx solid #dee2e6;
  color: #6c757d;
  font-size: 28rpx;
  padding: 20rpx 36rpx;
  border-radius: 8rpx;
  box-shadow: 0 2rpx 4rpx rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
  margin-right: 20rpx;
}

.back-btn:hover {
  background: #f8f9fa;
  border-color: #adb5bd;
}

.form-container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20rpx;
  padding: 30rpx;
  backdrop-filter: blur(10rpx);
  box-shadow: 0 8rpx 32rpx rgba(0, 0, 0, 0.1);
}

.form-item {
  margin-bottom: 40rpx;
}

.label {
  display: block;
  font-size: 32rpx;
  font-weight: 600;
  color: #333;
  margin-bottom: 20rpx;
}

.input {
  width: 100%;
  height: 80rpx;
  border: 2rpx solid #e0e0e0;
  border-radius: 12rpx;
  padding: 0 24rpx;
  font-size: 28rpx;
  background: white;
  box-sizing: border-box;
}

.input:focus {
  border-color: #667eea;
  outline: none;
}

.textarea {
  width: 100%;
  min-height: 160rpx;
  border: 2rpx solid #e0e0e0;
  border-radius: 12rpx;
  padding: 24rpx;
  font-size: 28rpx;
  background: white;
  box-sizing: border-box;
  resize: none;
}

.textarea:focus {
  border-color: #667eea;
  outline: none;
}

.submit-btn {
  width: 100%;
  height: 88rpx;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-size: 32rpx;
  font-weight: 600;
  border: none;
  border-radius: 12rpx;
  margin-top: 40rpx;
  box-shadow: 0 4rpx 16rpx rgba(102, 126, 234, 0.3);
}

.submit-btn:active {
  transform: translateY(2rpx);
  box-shadow: 0 2rpx 8rpx rgba(102, 126, 234, 0.3);
}